4428142778 has 8 divisors (see below), whose sum is σ = 6648919680. Its totient is φ = 2211836220.

The previous prime is 4428142769. The next prime is 4428142801. The reversal of 4428142778 is 8772418244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115108 + ... + 1119071.

It is an arithmetic number, because the mean of its divisors is an integer number (831114960).

Almost surely, 2^4428142778 is an apocalyptic number.

4428142778 is a deficient number, since it is larger than the sum of its proper divisors (2220776902).

4428142778 is a wasteful number, since it uses less digits than its factorization.

4428142778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235172.

The product of its digits is 802816, while the sum is 47.

The square root of 4428142778 is about 66544.2918513677. The cubic root of 4428142778 is about 1642.1287518538.

The spelling of 4428142778 in words is "four billion, four hundred twenty-eight million, one hundred forty-two thousand, seven hundred seventy-eight".